Spiromicrovirus Explained

Spiromicrovirus is a genus of viruses, in the family Microviridae, in the subfamily Gokushovirinae. Spiroplasma bacteria serve as natural hosts. There is only one species in this genus: Spiroplasma virus SpV4.^{[1] [2]}

Structure

Viruses in Spiromicrovirus are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 30 nm. Genomes are circular, around 6.1kb in length.

Genus	Structure	Symmetry !	Capsid	Genomic arrangement	Genomic segmentation
Spiromicrovirus	Icosahedral	T=1	Non-enveloped	Circular	Monopartite

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by pilus-mediated adsorption into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by bacteria lysis.Spiroplasma bacteria serve as the natural host.

External links

• Viralzone: Spiromicrovirus
• ICTV

Notes and References

1. Web site: Viral Zone. ExPASy. 15 June 2015.
2. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 10 May 2021.